Variability in Intravenous Immunoglobulin G Regimens for Autoimmune Neuromuscular Disorders
| Autor: | Melvin Berger, Randy Broyles, Linda Rodden, Patty Riley |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Adult
Male medicine.medical_specialty Adolescent Chronic inflammatory demyelinating polyneuropathy Gastroenterology Drug Administration Schedule Immunoglobulin G Young Adult Internal medicine Myasthenia Gravis medicine Humans Immunologic Factors Dosing interval Practice Patterns Physicians' Child Infusions Intravenous Aged Retrospective Studies Aged 80 and over biology business.industry Treatment regimen Immunoglobulins Intravenous General Medicine Middle Aged medicine.disease Myasthenia gravis Surgery Cross-Sectional Studies Polyradiculoneuropathy Chronic Inflammatory Demyelinating biology.protein Female business |
| Zdroj: | Postgraduate Medicine. 125:65-72 |
| ISSN: | 1941-9260 0032-5481 |
| Popis: | We reviewed the intravenous immunoglobulin G (IVIG) dispensing records of a specialty pharmacy to characterize the IVIG treatment regimens used for chronic inflammatory demyelinating polyneuropathy (CIDP) and myasthenia gravis (MG) in community practice.Anonymized records were selected based on International Classification of Diseases, Ninth Revision (ICD-9) codes and IVIG treatment for1 month. Each patient's immunoglobulin G (IgG) dose per infusion (mg/kg/dose) was multiplied by the number of doses per month (30.5 days divided by the dosing interval in days) to yield the total monthly dose (mg/kg/month). Data were analyzed and summarized using descriptive statistics.Forty-six patients (median age, 56.5 years; range, 8-86 years) fulfilled the inclusion criteria. Thirty-one patients with CIDP received IgG at 7- to 92-day intervals (mean [standard deviation (SD)], 28 [16] days). The mean (SD) IgG dose was 75 (60) g/dose, equivalent to 866 (623) mg/kg/dose and 1145 (778) mg/kg/month. Six patients with stable MG received IVIG or subcutaneous IgG at 3.5- to 61-day intervals (28 [20] days) at a mean (SD) IgG dose of 39 (15) g/dose, equivalent to 405 (108) mg/kg/dose and 783 (680) mg/kg/month. Nine patients with MG with acute exacerbations received IgG at 7- to 42-day intervals (22 [12] days) at a mean (SD) dose of 40 (21) g/dose, equivalent to 403 (172) mg/kg/dose and 641 (288) mg/kg/month. One patient with CIDP and 4 patients with MG were treated with weekly subcutaneous IgG injections.Although patients with CIDP and MG are treated with mean total monthly IgG doses similar to those approved by the US Food and Drug Administration, the individual doses and intervals vary considerably, suggesting that physicians may be adjusting IgG dosing according to each patient's clinical condition and treatment response. Further study is necessary to determine the criteria used to adjust IgG treatment regimens and whether these adjustments optimize clinical outcomes while limiting overall costs. |
| Databáze: | OpenAIRE |
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